Common:
* landfill: a place where waste is buried
* landform: a natural feature of the Earth's surface
* landlord: a person who owns and rents out property
* landline: a telephone connection using wires
* landmark: a prominent feature of a landscape
* landowner: a person who owns land
* landslide: a mass of rock and earth that slides down a slope
* landscape: the visible features of an area of land
* landward: in the direction of the land
Less common:
* landlubber: a person who is inexperienced at sea
* landlocked: surrounded by land
* landman: a person who works in the oil and gas industry
* landowner: a person who owns land
* landrace: a breed of animal or plant that has been developed in a particular area
* landscrape: the process of shaping the land
* landskip: a painting of a landscape
* landward: in the direction of the land
* landworthy: fit for sailing
This is not an exhaustive list, but it gives you a good starting point. There are many other compound words with "land" in them, depending on what you are looking for.